Apparatus for expressing juice from meat.



PATENTED JAN.I17, 1905.

I. EAVENSON. APPARATUS FOR EXPRBSSING JUICE PROM MEAT.

APPLICATION FILED APR. 21, 1904.

' 3 SHEETS-SHEET 1.

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No. 780,415. PATENFIED JAN. 17. 1905.

I. 0. EAVENSON. I APPARATUS FOR EXPRBSSING JUICE FROM MEAT.

APPLICATION IIL ED APR. 21, 1904.

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No. 780,415. PATENTBD JAN. 17, 1905. I.'G. BA-VENSON.

APPARATUS FOR EXPRESSING JUICE PROM MEAT.

Arrmouzox 11,111 1121321, 1904.

3 SHEETS-SHEET 3.

UNITED STATES Patented January 1'7, 1905.

PATENT OFFICE.

IDA C. EAVENSON, OF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR EXPRESSING JUICE FROM MEAT.

SPEGIIFIGA'JTION forming part of Letters Patent No. '780,415, dated. January 17, 1905.

' A li ti fil d April 21, 1904.. Serial No. 204,257.

To otZZ whom it may concern.-

Be it known that I, IDA G. EAVENSON, a citizen of the United Statearesiding in Philadelphia, Pennsylvania, have invented certain Improvements in Apparatus for Expressing Juice from Meat, of which the following is a specification. V

The o'bjectof my invention is to so construct a device for pressing juice from meat that the extractor can be conveniently and economically heated by gas and the extrac tion of the juice can thereby be efiected by the combined action of heat and pressure in an' apparatus designed for domestic use.

In the accompanying drawings, Figure 1 is a longitudinal section, partly in elevation, of a meat-juice extractor constructed in accordance with my invention. Fig. 2 is a view, partly in elevation and partly in transverse section, on the line a a, Fig. 1; and Fig. 3 is a view, partly in elevation and partly in section, on theline Z) 5, Fig. 1.

I have shown my invention asapplied to that class of meat-juice extractors in which a tapering forcing-screw 1 operates Within a corresponding tapering casing 2, having [in the bottom a perforated strainer-plate 8, at the top and near one end afeed-hopper 4, and at the opposite end a dischargeorifice ,5, through which is delivered the pulp from which the juice has been pressed, the juice being collected in a chamber 6 beneath the strainer-plate 3 and being discharged therefrom through a spout7, the whole structure being mounted upon a clamping-bracket 8 and the screw-shaft 9 being rotated by means of a crank arm or handle 10, which operates, through the medium of a spur-pinion 11 and spur-gear 12, so as to increase the amount of power applied to the screw-shaft.

so far as described the device is not novel;

and my invention consists in combining with it means for heating the casing 2, for enhancing the squeezing or pressing effect of the screw 1, and for controlling the discharge-ori- For the purpose of heating the casing I employ a gas-flame, the casing 2 being hollow or double-walled throughout the greater portion ofits extent, so as to inclose a chamber thereby raise the temperature of the meat Y within said chamber to a degree best calculated to insure the extraction of the maximum amount of juice therefrom when it is subjected to the pressure of the forcing-screw 1.

The gas and air intended to form the Bunsen flame relied upon for heating purposes are mixed in a chamber 14 below the chamber 13,'the mixture of air and gas escaping through orifices 15 in the partition between the two chambers and air to support combustionentering the chamber 13 at points adjacent to these orifices through openings or slots 16 in the outer wall of the hollow casing, as shown in Fig. 2. i The products of combustion circulate around the sides and over the top of the extractingchamber, the waste products of combustion escaping from an outlet 17, which may, if desired, connect with a suitable escape flue or chimney.

A nipple 18, connected to a suitable source of gas-supply and provided with a regulatingvalve 19, discharges gas through a jet 20 into lated by adjustment of the ring-valve or damper 23, as shown in Fig. 2, whereby the rela tive volumes of air and gas can be regulated so as to secure any desired heating result.

The area of the discharge-orifice 5 is governed by adjustment of a plug 24, which is swiveled to a screw-stem 25, the latter engaging a nut 26, which forms part of a yoke 27, pivotally mounted upon the casing 2, the discharge end of said casing having a downwardly-extending slot 28, through which the discharged pulp can pass into a receptacle suitably located. When it is desired to provide free outlet from the pressure-chamber of the device for cleaning or other purposes, the plug 24 can be. fully retracted by manipulation of the screw-stem 25, and the yoke 27 can then be swung upward or downward, so as to carry the plug out of line with the orifice 5 and provide a straightway passage at the end of the casing.

The plug 24 has two valve-faces and 31, and the casing2 has inner and outer valveseats 32 and 33, which bear such relation to the valve-faces 30 and 31 of the plug that the outer valve-face 31 will contact with the outer seat 33 before the inner valve-face 30 contacts with the inner seat 32 and will therefore act as a stop to prevent the entire closing of the outlet 5, thus preventing injury to the machine which might be caused by continued rotation of the forcing-screw 1 after the discharge of pulp from the machine had been cut off.

The interior of the casing 9. presents a series of spiral ribs 35, Whose pitch is the reverse of that of the threads of the forcing-screw 1 and is steeper than the same, these ribs having blunt or rounded faces, so that they will cooperate with the threads of the forcingscrew to form successive points of resistance to the forward movement of the meat in the casing, and thus provide successive compressions and expansions of the meat in its passage through the casing instead of a single progressive compression.

It will be noted that my j uice-extractor is continuous in its OperatiOn that is to say, the pulp from which the juice has been extracted is being continually delivered from the orifice 5 and fresh meat can be continually fed to the machine through the hopper 4-n1y invention in this respect being essentially different from machines of the plunger type, which are essentially intermittent in their operation.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. A meat-juice extractor having, in combination, a forcing-screw, a casing receiving the same and having a strainer-plate, a dischargeorifice and a feed-hopper, said casing being double-walled so as to provide a heating-chamber partially enveloping the extracting-chamber, and a gas-burner supplying products of combustion to said heating-chamber, substantially as specified.

2. Ameat-juice extractor in which are combined a forcing-screw, a casing receiving the same and having a strainer-plate, a dischargeorifice and a feed-hopper, said casing being double-walled so as to provide a heating-chamber which partially euvelops the extractingchamber, and a gas and air mixing chamber communicating with said heating-chamber, the outer wall of theheating-chamber having openings for the inflow of air to support combustion, substantially as specified.

3. A meat-juice extractor having, in combination, a forcing-screw, a casing receiving the same and having a perforated strainer-plate, a discharge-orifice and a feed-hopper, said casing being double-walled so as to provide a heating-chamber which partially envclops the extracting-chamber, a clarmaing-bracket for said casing, and gas and air nixing passages in said bracket, substantially as specified.

4. A meat-juice extractor comprising, in combination, aforcing-screw having a sharpedged spiral, and a casing receiving the same and having a perforated strainer-plate, a discharge-orifice, afeed-hopper, andinternal ribs presenting a blunt or rounded face opposed to thesharpedged spiral of the screw, substan tially as specified.

5. A meat-juice extractor having, in combination, a forcing-screw and a casing receiving the same and having a perforated strainerplate, a discharge-orifice,a feed-hopper,and internalspiral ribs whose pitch is the reverse of, and is steeper than, that of the threads of the forcing-screw, substantially as specified.

6. A juice-extractor having,in combination, a forcing-screw and a casing receiving the same and havinga perforated strainer-plate, a feedhopper, a discharge-orifice, a swinging yoke pivoted to the casing, and a regulating-plug for said discharge-orifice adjustable on said swinging yoke, substantially as specified.

7. A juice-extractor having,in combination, a forcing-screw and a casing receiving the same and having a perforated strainer-plate, a feedhopper and adischarge-orifice with regulatingplug having a stop for preventing the same from closing said discharge-orifice, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

IDA (J. EAVENSON.

Witnesses:

TALTER CInsM, Jos. H. KLuix. 

